We must always keep our classroom _____.

根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。

— What seems to be the problem?

—   1   

— How long have you been like this?

— Since Saturday night.

— _2   

— Yes, I also feel lighthearted.

— Can you think of anything you ate Saturday that might have caused it?

— All I can think of is the fish I had. It didn't taste quite right.

— 3      Now I'll give you some medicine. Take it and you should be feeling better soon.

—  4      

— I also suggest that you follow a special diet.

—     5      

— You should stick to eating lighter foods.

A. What's that?

B. That might be it.

C. Thank you, doctor.

D. Any other problems?

E. I have a running nose.

F. Have you seen a doctor?

G. I have a terrible stomachache.

委托监理合同终止的标志是( )。

A．竣工验收完毕

B．签订工程保修责任书

C．工程保修期满

D．监理方收到监理报酬尾款

投资机会选择主要包括投资机会寻找和筛选两个步骤。 ( )

两线圈之间的电磁感应叫做自感现象，由此产生的感应电动势叫自感电动势。

在交接班时发生障碍或正在进行电路调度、业务处理时不得进行交接班接班人应该协同处理待障碍恢复或告一段落后再行交接班。